[UMTeleporter]

For 1), that is not an issue unless someone is using strange team switch binds

It's fine, it works perfectly with the client side team switch menu utility.

For 2), no. It only alerts in ADMIN CHAT the attempted value. Meaning only admins would see it. In addition, you can use
sm_bu_alert_delay SECONDS (default: 15)
to set the amount of time per attempt warning.